When I look back on my own situation, I always think that mine is the worst. Then, I read your story, Greytowngal. I'm very sorry for your situation. I do, however know how you feel.
My wife was horribly abused as a little girl. Physically, sexually, etc. Over the past 2.5 years, several things have happened in her / our lives that have caused her to have a relapse, and shut down completely emotionally. Since January of this year, she has told me "You have to let me go. You deserve someone better than me, etc." I, in reply, told her "The person I deserve is you."
Last month, she moved out. She assures me that it has nothing to do with me, or our marriage. She was diagnosed with PTSD in March, and will finally be starting treatment soon. The treatment she will be doing is called EMDR, and supposedly works wonders with people in my wife's situation. I am very hopeful.
However, at least for the time being, I'm very VERY lonely. Even before she moved out, our relationship was taking blow after blow. She stopped telling me she loved me. Then, she even stopped saying "I love you, too." when I told her I loved her.
Any physical contact has been abruptly stopped, and almost immediately. I asked her the other day when I was dropping off our son if she would be comfortable with a hug. She said, "NO!!!"
I tried to take her hand to say grace the other day, and she pulled away from me.
When she moved out, I gave her a picture of our daughter, our son and one of us on our wedding day. When I was over there, the one of our son and daughter were setup, but not the one of us.
And, last but not least, her Facebook profile no longer says "Married to 'Angus McGee'". I asked her about that, and she told me it was due to Facebook's privacy settings. I'm not sure I'm buying that.
I'm sorry I cannot give you any advice, Greytowngal, but I can tell you that I know how you feel. She too is the love of my life. I miss her terribly. Some days, I just don't know if things will ever get better, even with her going in to therapy. I asked her if she would set coming home as a goal, and she told me "I can't even set the goal of what I am going to do for dinner tonight, much less something that far down the road."
Yet, here I sit. Waiting...